daring vs mettle

daring

adj
  • Courageous or showing bravery; doughty. 

  • Racy; sexually provocative. 

  • Adventurous, willing to take on or look for risks; overbold. 

noun
  • Boldness. 

mettle

adj
  • Spirited, vigorous, stout-hearted. 

noun
  • Good temperament and character. 

  • A quality of endurance and courage. 

How often have the words daring and mettle occurred in a corpus of books? (source: Google Ngram Viewer )